Pocahontas County is located in the northwestern part of Iowa, in the third tier of counties south of the Minnesota state line and in the fourth tier east of the Missouri River. It lies entirely in the Wisconsin^ drift soil area, and the soils of the county, are, therefore, all of drift origin.
Brown, P. E.; O'Neal, A. M.; and Meldrum, H. R., "Soil Survey of Iowa, Report No. 69—Pocahantas County Soils" (1933). Soil Survey Reports. 83.